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Even after regional removal (by whatever means) there may still be non-zero anomalies near survey area boundaries. In that case, the model's
mesh must be augmented with padding cells, and the recovered values of susceptibility in those padding cells ignored during interpretation.
NEEDED - an example.
6. Other advanced topics
IMPORTANT: Other than upward continuation, data processing steps that change the values or locations of data points should be avoided if
possible. This is because success depends upon accurate forward modelling, and any processing would have to be accuratly reproduced in the
forward modelling algorithm. See Chapter 3, Data Processing, Section 3, Pre-processing for more details.
Other topics that can be considered "advanced" are listed here. Grayed out points are incomplete.
1. High susceptibilities: The presence of materials with susceptibilities greater than roughly 2 (S.I.) causes demagnetization effects, and
the forward modelling problem becomes very non-linear. Such situations are not solvable using MAG3D. Evidence that this might be a
problem includes ...
NEEDED: details here.
2. Modifying depth (or distance) weighting: when and how.
3. Incorporating borehole and surface physical property sampling information. NEEDED: pointer to workflow for this.
4. Forward modelling: NEEDED: workflow for generating models, calculating data, then inverting. Via a simple step-by-step with the
"mystery" model??
5. Large Areas: NEEDED: how to carry out tiling, including effects of different inducing field parameters.
6. Not clear about notes from N.P. on Curie Point ??
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Advanced techniques
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